Hi and welcome to Neurotalk.
Sorry to hear of your difficulties, your symptoms certainly sound consistent with PCS. Are you currently under medical care for these symptoms? Suicidal ideation in particular needs to be addressed immediately.
Rather than worrying too much about whether you have CTE I’d suggest seeking treatment for the cognitive and emotional struggles you are experiencing. After my injury, specific focused therapies with occupational and speech therapists worked wonders. There may be medication that will help your mood disorders. Below is the link to the Brain Injury Association of Indiana, you may find useful resources there. Best to you.
http://www.biai.org/